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• DivX audio not decoded on DVD player

  8 août 2019, par Shaul

  Moved to https://video.stackexchange.com/questions/28225/divx-audio-not-decoded-on-dvd-player

  I am converting MP4 movie into AVI/DivX format. I plan to copy the AVI to a USB memory stick and plug it into my DVD player. My player is a Pioneer 3052 that supports USB input.

  I convert the file using ffmpeg without error messages. The output file is played correctly on my computer, including audio. I use "Movies & TVs" and "DIVX Player" for testing.

  When I try running it on my Pioneer the video and the subtitles are ok but there’s no audio. I know that there’s no issues with the hardware because videos converted with "FreeMake Video converter" do play audio.

  My command line is :

  .\ffmpeg.exe  "-i INFILE -c:v mpeg4 -vtag xvid -qscale:v 3 -c:a libmp3lame  -vf "scale=720:576:force_original_aspect_ratio=decrease,pad=720:576:(ow-iw)/2:(oh-ih)/2","subtitles=f=SRTFILE:charenc=ISO-8859-8:force_style=PrimaryColour=&H0000FFFF,Fontsize=16" OUTFILE

  I also experimented with -b:a 192k, -b:a 96k and -qscale:a 4 all leading to the same results.

  I wander what else to try.
  I add the report produced by ffprobe (for the output file) :

  [STREAM]
  
  index=0
  
  codec_name=mpeg4
  
  codec_long_name=MPEG-4 part 2
  
  profile=Simple Profile
  
  codec_type=video
  
  codec_time_base=1001/24000
  
  codec_tag_string=xvid
  
  codec_tag=0x64697678
  
  width=720
  
  height=576
  
  coded_width=720
  
  coded_height=576
  
  has_b_frames=0
  
  sample_aspect_ratio=1:1
  
  display_aspect_ratio=5:4
  
  pix_fmt=yuv420p
  
  level=1
  
  color_range=unknown
  
  color_space=unknown
  
  color_transfer=unknown
  
  color_primaries=unknown
  
  chroma_location=left
  
  field_order=unknown
  
  timecode=N/A
  
  refs=1
  
  quarter_sample=false
  
  divx_packed=false
  
  id=N/A
  
  r_frame_rate=24000/1001
  
  avg_frame_rate=24000/1001
  
  time_base=1001/24000
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=163203
  
  duration=6806.925125
  
  bit_rate=1243432
  
  max_bit_rate=N/A
  
  bits_per_raw_sample=N/A
  
  nb_frames=163203
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=0
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  [/STREAM]
  
  [STREAM]
  
  index=1
  
  codec_name=mp3
  
  codec_long_name=MP3 (MPEG audio layer 3)
  
  profile=unknown
  
  codec_type=audio
  
  codec_time_base=1/48000
  
  codec_tag_string=U[0][0][0]
  
  codec_tag=0x0055
  
  sample_fmt=fltp
  
  sample_rate=48000
  
  channels=2
  
  channel_layout=stereo
  
  bits_per_sample=0
  
  id=N/A
  
  r_frame_rate=0/0
  
  avg_frame_rate=0/0
  
  time_base=3/125
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=283622
  
  duration=6806.928000
  
  bit_rate=192000
  
  max_bit_rate=N/A
  
  bits_per_raw_sample=N/A
  
  nb_frames=283622
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=0
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  [/STREAM]
  
  [FORMAT]
  
  filename=H:\Movies\Memento.avi
  
  nb_streams=2
  
  nb_programs=0
  
  format_name=avi
  
  format_long_name=AVI (Audio Video Interleaved)
  
  start_time=0.000000
  
  duration=6806.928000
  
  size=1235006020
  
  bit_rate=1451469
  
  probe_score=100
  
  TAG:encoder=Lavf58.20.100
  
  [/FORMAT]

  EDIT :
  I add an example of a movie that is OK on this DVD player :

  [STREAM]
  
  index=0
  
  codec_name=mpeg4
  
  codec_long_name=MPEG-4 part 2
  
  profile=Advanced Simple Profile
  
  codec_type=video
  
  codec_time_base=1001/24000
  
  codec_tag_string=XVID
  
  codec_tag=0x44495658
  
  width=576
  
  height=432
  
  coded_width=576
  
  coded_height=432
  
  has_b_frames=1
  
  sample_aspect_ratio=1:1
  
  display_aspect_ratio=4:3
  
  pix_fmt=yuv420p
  
  level=5
  
  color_range=unknown
  
  color_space=unknown
  
  color_transfer=unknown
  
  color_primaries=unknown
  
  chroma_location=left
  
  field_order=unknown
  
  timecode=N/A
  
  refs=1
  
  quarter_sample=false
  
  divx_packed=false
  
  id=N/A
  
  r_frame_rate=24000/1001
  
  avg_frame_rate=24000/1001
  
  time_base=1001/24000
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=134521
  
  duration=5610.646708
  
  bit_rate=943851
  
  max_bit_rate=N/A
  
  bits_per_raw_sample=N/A
  
  nb_frames=134521
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=0
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  [/STREAM]
  
  [STREAM]
  
  index=1
  
  codec_name=mp3
  
  codec_long_name=MP3 (MPEG audio layer 3)
  
  profile=unknown
  
  codec_type=audio
  
  codec_time_base=1/48000
  
  codec_tag_string=U[0][0][0]
  
  codec_tag=0x0055
  
  sample_fmt=fltp
  
  sample_rate=48000
  
  channels=2
  
  channel_layout=stereo
  
  bits_per_sample=0
  
  id=N/A
  
  r_frame_rate=0/0
  
  avg_frame_rate=0/0
  
  time_base=3/125
  
  start_pts=0
  
  start_time=0.000000
  
  duration_ts=233777
  
  duration=5610.648000
  
  bit_rate=91176
  
  max_bit_rate=N/A
  
  bits_per_raw_sample=N/A
  
  nb_frames=233777
  
  nb_read_frames=N/A
  
  nb_read_packets=N/A
  
  DISPOSITION:default=0
  
  DISPOSITION:dub=0
  
  DISPOSITION:original=0
  
  DISPOSITION:comment=0
  
  DISPOSITION:lyrics=0
  
  DISPOSITION:karaoke=0
  
  DISPOSITION:forced=0
  
  DISPOSITION:hearing_impaired=0
  
  DISPOSITION:visual_impaired=0
  
  DISPOSITION:clean_effects=0
  
  DISPOSITION:attached_pic=0
  
  DISPOSITION:timed_thumbnails=0
  
  [/STREAM]
  
  [FORMAT]
  
  filename=H:\Honey.I.Shrunk.The.Kids.1989.FS.DVDRip.XViD.iNT-EwDp.HebSub.www.Moridim.tv.avi
  
  nb_streams=2
  
  nb_programs=0
  
  format_name=avi
  
  format_long_name=AVI (Audio Video Interleaved)
  
  start_time=0.000000
  
  duration=5610.648000
  
  size=734808064
  
  bit_rate=1047733
  
  probe_score=100
  
  TAG:encoder=VirtualDubMod 1.5.10.2 (build 2540/release)
  
  [/FORMAT]

• Linux Media Player Survey Circa 2001

  2 septembre 2010, par Multimedia Mike — General

  Here’s a document I scavenged from my archives. It was dated September 1, 2001 and I now publish it 9 years later. It serves as sort of a time capsule for the state of media player programs at the time. Looking back on this list, I can’t understand why I couldn’t find MPlayer while I was conducting this survey, especially since MPlayer is the project I eventually started to work for a few months after writing this piece.

  For a little context, I had been studying multimedia concepts and tech for a year and was itching to get my hands dirty with practical multimedia coding. But I wanted to tackle what I perceived as unsolved problems– like playback of proprietary codecs. I didn’t want to have to build a new media playback framework just to start working on my problems. So I surveyed the players available to see which ones I could plug into and use as a testbed for implementing new decoders.

  Regarding Real Player, I wrote : “We’re trying to move away from the proprietary, closed-source “solutions”. Heh. Was I really an insufferable open source idealist back in the day ?

  Anyway, here’s the text with some Where are they now ? commentary [in brackets] :

  ---

  Towards an All-Inclusive Media Playing Solution for Linux

  I don’t feel that the media playing solutions for Linux set their sights high enough, even though they do tend to be quite ambitious.

  I want to create a media player for Linux that can open a file, figure out what type of file it is (AVI, MOV, etc.), determine the compression algorithms used to encode the audio and video chunks inside (MPEG, Cinepak, Sorenson, etc.) and replay the file using the best audio, video, and CPU facilities available on the computer.

  Video and audio playback is a solved problem on Linux ; I don’t wish to solve that problem again. The problem that isn’t solved is reliance on proprietary multimedia solutions through some kind of WINE-like layer in order to decode compressed multimedia files.

  Survey of Linux solutions for decoding proprietary multimedia
  updated 2001-09-01

  AVI Player for XMMS
  This is based on Avifile. All the same advantages and limitations apply.
  [Top Google hit is a Freshmeat page that doesn’t indicate activity since 2001-2002.]

  Avifile
  This player does a great job at taking apart AVI and ASF files and then feeding the compressed chunks of multimedia data through to the binary Win32 decoders.

  The program is written in C++ and I’m not very good at interpreting that kind of code. But I’m learning all over again. Examining the object hierarchy, it appears that the designers had the foresight to include native support for decoders that are compiled into the program from source code. However, closer examination reveals that there is support for ONE source decoder and that’s the “decoder” for uncompressed data. Still, I tried to manipulate this routine to accept and decode data from other codecs but no dice. It’s really confounding. The program always crashes when I feed non-uncompressed data through the source decoder.
  [Lives at http://avifile.sourceforge.net/ ; not updated since 2006.]

  Real Player
  There’s not much to do with this since it is closed source and proprietary. Even though there is a plugin architecture, that’s not satisfactory. We’re trying to move away from the proprietary, closed-source “solutions”.
  [Still kickin’ with version 11.]

  XAnim
  This is a well-established Unix media player. To his credit, the author does as well as he can with the resources he has. In other words, he supports the non-proprietary video codecs well, and even has support for some proprietary video codecs through binary-only decoders.

  The source code is extremely difficult to work with as the author chose to use the X coding format which I’ve never seen used anywhere else except for X header files. The infrastructure for extending the program and supporting other codecs and file formats is there, I suppose, but I would have to wrap my head around the coding style. Maybe I can learn to work past that. The other thing that bothers me about this program is the decoding approach : It seems that each video decoder includes routines to decompress the multimedia data into every conceivable RGB and YUV output format. This seems backwards to me ; it seems better to have one decoder function that decodes the data into its native format it was compressed from (e.g., YV12 for MPEG data) and then pass that data to another layer of the program that’s in charge of presenting the data and possibly converting it if necessary. This layer would encompass highly-optimized software conversion routines including special CPU-specific instructions (e.g., MMX and SSE) and eliminate the need to place those routines in lots of other routines. But I’m getting ahead of myself.
  [This one was pretty much dead before I made this survey, the most recent update being in 1999. Still, we owe it much respect as the granddaddy of Unix multimedia playback programs.]

  Xine
  This seems like a promising program. It was originally designed to play MPEGs from DVDs. It can also play MPEG files on a hard drive and utilizes the Xv extensions for hardware YUV playback. It’s also supposed to play AVI files using the same technique as Avifile but I have never, ever gotten it to work. If an AVI file has both video and sound, the binary video decoder can’t decode any frames. If the AVI file has video and no sound, the program gets confused and crashes, as far as I can tell.

  Still, it’s promising, and I’ve been trying to work around these crashes. It doesn’t yet have the type of modularization I’d like to see. Right now, it tailored to suit MPEG playback and AVI playback is an afterthought. Still, it appears to have a generalized interface for dropping in new file demultiplexers.

  I tried to extend the program for supporting source decoders by rewriting w32codec.c from scratch. I’m not having a smooth time of it so far. I’m able to perform some manipulations on the output window. However, I can’t get the program to deal with an RGB image format. It has trouble allocating an RGB surface with XvShmCreateImage(). This isn’t suprising, per my limited knowledge of X which is that Xv applies to YUV images, but it could also apply to RGB images as well. Anyway, the program should be able to fall back on regular RGB pixmaps if that Xv call fails.

  Right now, this program is looking the most promising. It will take some work to extend the underlying infrastructure, but it seems doable since I know C quite well and can understand the flow of this program, as opposed to Avifile and its C++. The C code also compiles about 10 times faster.
  [My home project for many years after a brief flirtation with MPlayer. It is still alive ; its latest release was just a month ago.]

  XMovie
  This library is a Quicktime movie player. I haven’t looked at it too extensively yet, but I do remember looking at it at one point and reading the documentation that said it doesn’t support key frames. Still, I should examine it again since they released a new version recently.
  [Heroine Virtual still puts out some software but XMovie has not been updated since 2005.]

  XMPS
  This program compiles for me, but doesn’t do much else. It can play an MP3 file. I have been able to get MPEG movies to play through it, but it refuses to show the full video frame, constricting it to a small window (obviously a bug).
  [This project is hosted on SourceForge and is listed with a registration date of 2003, well after this survey was made. So the project obviously lived elsewhere in 2001. Meanwhile, it doesn’t look like any files ever made it to SF for hosting.]

  XTheater
  I can’t even get this program to compile. It’s supposed to be an MPEG player based on SMPEG. As such, it probably doesn’t hold much promise for being easily extended into a general media player.
  [Last updated in 2002.]

  GMerlin
  I can’t get this to compile yet. I have a bug report in to the dev group.
  [Updated consistently in the last 9 years. Last update was in February of this year. I can’t find any record of my bug report, though.]

• Text in ass subtitles is displayed smaller then should

  3 septembre 2024, par Armen Sanoyan

  I add subtitles to video by ffmpeg using two different ways. The first way is by using drawtext command and this way everything works perfectly. Here is the command

  


  ffmpeg -i ./input.mp4 -vf "drawtext=text='reise':fontfile=../fonts/Audiowide-Regular.ttf:fontsize=55:fontcolor=white:x=0:y=683" -codec:a copy ./output.mp4


  


  The second way is by using ass subtitles file. This way I got smaller letters and wrong y position for text. Below is the ass subtitle file content

  


  
[Script Info]
Title: Advanced Highlighted Subtitle Example
ScriptType: v4.00+
WrapStyle: 0
PlayResX: 1048
PlayResY: 750

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Audiowide Regular,55,&HFFFFFF,&H00FFFFFF,&H00000000,&H00000000,1,0,0,0,100,100,0,0,0,0,0,2,10,10,10,1

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text

Dialogue: 0,00:00:0.00,00:00:2.38,Default,,0,0,0,,{\pos(0,683)\an4}reise


  


  And command for second approach

  


  ffmpeg -i ./input.mp4 -vf "ass=../subtitles.ass:fontsdir=../fonts/Audiowide-Regular.ttf"  ../output.mp4


  


  So they both get the same video, same font and same text. The problem is that in case of using ass file the text is much smaller and dislocated

  


  The numbers on axis indicate sizes by pixels.
As you can see in second image it's much smaller and has wrong y coordinate. It seems like it has wrong scaling numbers. What is wrong with my ass file configs ?

  


  I have tried solution from [universalmediaserver]to remove PlayResX/Y, but it doesn't work. (https://www.universalmediaserver.com/forum/viewtopic.php?t=5907). I also tried to measure the text width in many other ways(like in html rendered in browser, canvas...), so I'm pretty sure that drawtext does give correctly rendered width. The problem is related to ass subtitles file. Also if I use popular fonts like Arial the deviation is much less.